The endless shrimp specials have ended at Red Lobster on Shady Grove Road, which closed its doors this week along with at least 50 other locations across the country. The Orlando-based seafood chain, in business for more than half a century, had recently begun promoting $20 all-you-can-eat shrimp deals to bring more customers through the door. But the strategy worked so well that it backfired, leaving Red Lobster in the red.